Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Nuclear Stability03:18

Nuclear Stability

23.2K
Protons and neutrons, collectively called nucleons, are packed together tightly in a nucleus. With a radius of about 10−15 meters, a nucleus is quite small compared to the radius of the entire atom, which is about 10−10 meters. Nuclei are extremely dense compared to bulk matter, averaging 1.8 × 1014 grams per cubic centimeter. If the earth’s density were equal to the average nuclear density, the earth’s radius would be only about 200 meters.
To hold positively charged protons together...
23.2K
RNA Stability01:53

RNA Stability

35.7K
Intact DNA strands can be found in fossils, while scientists sometimes struggle to keep RNA intact under laboratory conditions. The structural variations between RNA and DNA underlie the differences in their stability and longevity. Because DNA is double-stranded, it is inherently more stable. The single-stranded structure of RNA is less stable but also more flexible and can form weak internal bonds. Additionally, most RNAs in the cell are relatively short, while DNA can be up to 250 million...
35.7K
Stability01:28

Stability

414
The time response of a linear time-invariant (LTI) system can be divided into transient and steady-state responses. The transient response represents the system's initial reaction to a change in input and diminishes to zero over time. In contrast, the steady-state response is the behavior that persists after the transient effects have faded.
The stability of an LTI system is determined by the roots of its characteristic equation, known as poles. A system is stable if it produces a bounded...
414
Stability of structures01:14

Stability of structures

513
In mechanical engineering, the stability of systems under various forces is critical for designing durable and efficient structures. One fundamental way to explore these concepts is by analyzing systems like two rods connected at a pivot point, O, with a torsional spring of spring constant k at the pivot point. This system is similar in appearance to a scissor jack used to change tires on a car. In this case, the arms of the linkage (equivalent to the rods in this system) are entirely vertical,...
513
Pole and System Stability01:24

Pole and System Stability

959
The transfer function is a fundamental concept representing the ratio of two polynomials. The numerator and denominator encapsulate the system's dynamics. The zeros and poles of this transfer function are critical in determining the system's behavior and stability.
Simple poles are unique roots of the denominator polynomial. Each simple pole corresponds to a distinct solution to the system's characteristic equation, typically resulting in exponential decay terms in the system's...
959
Multimachine Stability01:25

Multimachine Stability

574
Multimachine stability analysis is crucial for understanding the dynamics and stability of power systems with multiple synchronous machines. The objective is to solve the swing equations for a network of M machines connected to an N-bus power system.
In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:
574

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Spatial Mapping of Electrochemical Hole Injection into Supercrystals of Perovskite Nanocrystals.

Nano letters·2026
Same author

Neutron Scattering Reveals a Dynamic Surface Equilibrium on l-α-Lecithin Functionalized CsPbBr<sub>3</sub> Nanocrystals.

Nano letters·2026
Same author

Ge<sub>14</sub>Br<sub>8</sub>(P<sup><i>n</i></sup>Pr<sub>3</sub>)<sub>4</sub>: A Material for Laser-Induced Printing of Elemental Germanium.

Inorganic chemistry·2026
Same author

Green circularly polarized luminescence with a high dissymmetry factor emitted by a [2.2]fluorenonophane.

Physical chemistry chemical physics : PCCP·2026
Same author

Tetrylidyne coordination modes: vinyl-type germa-ruthena anion [RuGe:]<sup>-</sup> and its reaction with monofluorobenzene.

Chemical communications (Cambridge, England)·2026
Same author

Interparticle Ion Migration in Cesium Lead Mixed-Halide Perovskite Nanocrystal Superlattices.

Nano letters·2026

Related Experiment Video

Updated: Jan 29, 2026

Author Spotlight: Experimental Approaches for the Synthesis of Low-Valent Metal-Organic Frameworks from Multitopic Phosphine Linkers
07:14

Author Spotlight: Experimental Approaches for the Synthesis of Low-Valent Metal-Organic Frameworks from Multitopic Phosphine Linkers

Published on: May 12, 2023

3.8K

Phosphine-Stabilized Digermavinylidene.

Kilian M Krebs1, Dominik Hanselmann1, Hartmut Schubert1

  • 1Institut für Anorganische Chemie , Eberhard Karls Universität Tübingen , Auf der Morgenstelle 18 , 72076 Tübingen , Germany.

Journal of the American Chemical Society
|February 9, 2019
PubMed
Summary

Researchers synthesized a novel phosphine-stabilized digermavinylidene from a germylene-phosphine Lewis pair and germanium dichloride. This compound undergoes [2+2] cycloaddition and can transfer germanium atoms, forming organogermanium nitrides.

More Related Videos

How to Stabilize Protein: Stability Screens for Thermal Shift Assays and Nano Differential Scanning Fluorimetry in the Virus-X Project
07:22

How to Stabilize Protein: Stability Screens for Thermal Shift Assays and Nano Differential Scanning Fluorimetry in the Virus-X Project

Published on: February 11, 2019

29.2K
Evaluation of the Storage Stability of Extracellular Vesicles
11:31

Evaluation of the Storage Stability of Extracellular Vesicles

Published on: May 22, 2019

15.0K

Related Experiment Videos

Last Updated: Jan 29, 2026

Author Spotlight: Experimental Approaches for the Synthesis of Low-Valent Metal-Organic Frameworks from Multitopic Phosphine Linkers
07:14

Author Spotlight: Experimental Approaches for the Synthesis of Low-Valent Metal-Organic Frameworks from Multitopic Phosphine Linkers

Published on: May 12, 2023

3.8K
How to Stabilize Protein: Stability Screens for Thermal Shift Assays and Nano Differential Scanning Fluorimetry in the Virus-X Project
07:22

How to Stabilize Protein: Stability Screens for Thermal Shift Assays and Nano Differential Scanning Fluorimetry in the Virus-X Project

Published on: February 11, 2019

29.2K
Evaluation of the Storage Stability of Extracellular Vesicles
11:31

Evaluation of the Storage Stability of Extracellular Vesicles

Published on: May 22, 2019

15.0K

Area of Science:

  • Organometallic Chemistry
  • Main Group Chemistry
  • Inorganic Synthesis

Background:

  • Germylene-phosphine Lewis pairs are reactive intermediates.
  • Stabilized low-valent germanium compounds are of significant interest.
  • Understanding the reactivity of germylenes is crucial for developing new germanium-based materials.

Purpose of the Study:

  • To synthesize and characterize a novel phosphine-stabilized digermavinylidene.
  • To investigate the electronic structure of the digermavinylidene.
  • To explore the reactivity of the digermavinylidene in cycloaddition and atom abstraction reactions.

Main Methods:

  • Reaction of an intramolecular germylene-phosphine Lewis pair with germanium dichloride.
  • Reduction of the resulting chloro-substituted germyl-germylene adduct using magnesium(I) or sodium.
  • Characterization using X-ray crystallography, density functional theory (DFT) calculations, and reactions with adamantylphosphaalkyne and adamantylazide.

Main Results:

  • Synthesis of a phosphine adduct of a chloro-substituted germyl-germylene in 92% yield.
  • Isolation of a phosphine-stabilized digermavinylidene in 72% yield (Mg reduction) or 52% yield (Na reduction).
  • Characterization of a [2+2] cycloaddition product with adamantylphosphaalkyne and a tetrameric organogermanium nitride with adamantylazide.

Conclusions:

  • A novel phosphine-stabilized digermavinylidene has been successfully synthesized and characterized.
  • The digermavinylidene exhibits unique reactivity, participating in cycloaddition and atom abstraction reactions.
  • DFT calculations provide insights into the electronic structure of this germanium compound.